3V heads (was Re: [DeTomaso] 2V heads0

[Asa Jay Laughton]

Dan,

As always, you rock.  That is exactly the kind of feedback I was looking 
for.  I had thought the ports required a fancy manifold, and the rest 
was icing on the cake.

Thank you,
Asa Jay

Daniel C Jones wrote:

>> What about the Aussie 3V heads?
> 
> 
> Specifically what are you asking about?  CHI makes a relocated port
> aluminum cylinder they dubbed the 3V.  It's available in 185, 218 and
> 225 cc port volumes.  They require dedicated intake manifolds.  The
> CHI intake is a very tall (about the height of a Strip Dominator with
> a 2" spacer) single plane.  A dual plane intake slightly taller than
> but similar in appearance to a Ford Boss 351 intake is available from
> a third party.  No word on how well it works.  Price on a standard
> assembled head was on par with Edelbrock 2V heads but the matching
> intakes were $650 last time I checked.  Prices are subject to change
> with the exchange rate.  CHI makes a 4V version which is essentially
> the 3V port opened up to match a 4V intake manifold.  CHI also makes
> a version with a 2V port opening.  Exhaust port is slightly raised
> relative to a 4V head.  The Pro Comp 351C heads are copies of the
> CHI 2V's but have recessed seats and don't flow as well (hardware
> is suspect as well).
> 
> A friend ordered an upgraded set of the CHI 4V heads but when the
> heads arrived they were fitted with the base Ferrea 5000 valves and
> springs.  CHI was quick about correcting the mistake.
> 
> The flow numbers for the 218 cc 3V look pretty good and they've proved
> themselves in the EMC but some drag racers are struggling to go any
> faster than they did with their previous 4V head/Strip Dominator
> intake combos.  For Panteras, I still like the C302B and Brodix BF300's
> better but the CHI heads are pretty good.
> 
> Dan Jones
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-- 
Asa Jay Laughton, MSgt, USAFR, Retired

& Shelley Marie
Spokane, WA

1973 Pantera L 5533
[ASASCAT]

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